The Landscape smooth and flatten tools can deform the landscape incorrectly causing chunks of the landscape to be removed (see attached image).

Steps to Reproduce
  1. Open the "Open World" map template.
  2. Use the Landscape smooth or flatten tools on the terrain.
    1. The further the brush is from the camera seems to affect the frequency at which it may happen. At least going further and further up into the sky, ~80,000 for example, makes the issue happen near instantly when using the flatten tool at nearly any strength.

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ComponentUE - LD & Modeling - Terrain - Landscape
Affects Versions5.0
Target Fix5.1
Fix Commit20625549
Main Commit20625549
CreatedMay 25, 2022
ResolvedJun 13, 2022
UpdatedJun 20, 2022